51078573 has 32 divisors (see below), whose sum is σ = 93139200. Its totient is φ = 26941248.

The previous prime is 51078569. The next prime is 51078581. The reversal of 51078573 is 37587015.

51078573 is a `hidden beast` number, since 5 + 10 + 78 + 573 = 666.

It is not a de Polignac number, because 51078573 - 2² = 51078569 is a prime.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51078553) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7938 + ... + 12851.

It is an arithmetic number, because the mean of its divisors is an integer number (2910600).

Almost surely, 2^51078573 is an apocalyptic number.

It is an amenable number.

51078573 is a deficient number, since it is larger than the sum of its proper divisors (42060627).

51078573 is a wasteful number, since it uses less digits than its factorization.

51078573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20818 (or 20812 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 36.

The square root of 51078573 is about 7146.9275216697. The cubic root of 51078573 is about 371.0333252541.

The spelling of 51078573 in words is "fifty-one million, seventy-eight thousand, five hundred seventy-three".